Outer cover for pneumatic tires for bicycles, motor-vehicles, and the like.



T. UUYSENS. ouER.co\/ER FOR PNELLMAMC ms FUR slcvcms, Mama VEH:

CLES, AND THE LIKE. APPLICATIQMHLED SEPT. 28, isle. lmm

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v the shape of the strlps are arranged in such4 manner that whereby a particularly can be obtained.

In conclusion the invention refers to a special description of metallic pressure rings which consist in that the outer edge of said rings is bent approximately to the shape of the cover and thus increases the supporting surface and prevents the formation o'f sharp angle there.

The invention is illustrated in thelaccompanying drawing as follows:

Figure 1 shows part .of a section the wheel with the cover.

Fig. 2 a lateral view of said part and Fig. 3 one of the strips spread out and on a smaller scale.

The air-tube 1, according to the mode of execution, is surrounded by an envelop which consists of three layers, 2, 3 and 4, each of which is made of a number of strips 5, the position of which is indicated in Fig. 2, and the shape when flat, shown in Fig. 3.

Said shape is such that if the strips are bent according to the section shown in Fig. 1, and placed next to one another, the strips form together a smooth annular envelop for the air-tube l, or the layer provided under the same. It is self-evident that for the purpose of fulfilling this object, the strips need not beexactly of the form illustrated in Fig. 3 and that it suffices to connect the l side of the strips next to one another when bent.

The strips of the various layers are sewn together one under the other by zig-Zag stitches ,L while the strips of the upper layers next to said seam are sewn to the strips of the layer lying under it. The the seams of one layer are always covered by the strips of the layer lying under it, as is clearly shown in Fig. 2 where the strips of said layer, which are provided'under the illustrated layer, are represented by dotted mes.

The edges of the surrounding layers are formed parallel to the surface of the wheel as fiat rings which lie over one another and against the flat sides of the felly 6. The annular part of the outer layer 4, for the purpose of strengthening it, is further furnishe vwith a .ring 7 of similar material sewn 1.bn to it. Upon said rings, on both sides of the wheel, a metallic ring 8 is provided the outer edge of iwhich is bent to cover for the purpose of supporting the same when pressed in. In connection with these ttvo rings 8 and the powerful fastening through 4annular parts of the envelop 'and the felly provided between them, bolts 9 are prI eumference of the tube.

. or of the cover.

vided which, when the nuts 10 are tightened, connect the felly with the cover.

Between the tube 1 and the felly 8, liaps or annular soft pieces 11, 12, which can be made of a material similar to that of the strips, are arranged, being secured to the inner sheet 2, and make a continuation oi the envelop in the direction of the cir- Said flaps are thus wedged firmly between the tube and the felly when the tube is inflated, so that the whole arrangement Yoffers a greater resistance to lateral strain. I

The drawing also illustrates an annular cover protector 13 around the cover, which y this mode of execution, conforms to the contour of the outer layer of the envelop Nevertheless said protector may be of any desired shape and be made removable from the cover in any known manner. It is, however, advisable that the fastening should be between one or more of the lower layers, as hereinbefore mentioned already.

A cover embodying this invention might be so constructed as to be secured to the felly and rim in the usual way, that is to say, the rings 7 might be formed into the customary edge beads to lit into the rim.

In laddition to the advantages already mentioned above, the cover, according to this invention, offers another advantage, namely that it can be easily repaired, while when one or more strips are damaged they can easily be replaced by new ones. Owing to the arrangement of several layers each cover can also be strengthened as desired, without an entirely new strip being necessary for that purpose, which is also a great advantage in the manufacture of the covers.

Havingthus fully described my invention, what I claim is:

An outer cover for pneumatic tires. comprising a plurality of superposed layers connected at their central portions but disconnected at their edge portions, in conjunction with a felly the side surfaces of which are vengaged by the inner faces of the loos(- edge port-ions of the outer layers, while the peripheral surface of the folly is engaged by the loose edge portions of the inner layer, and means for securing the edge portions of thc outer layers to the felly.

In testimony whereof I afiix my signature in presence of tivo witnesses:

`TossANUs DUYsENs.

Witnesses:

H. F. JoRRrrsMA, D. C. GLERY. 

